... SUS304(18-8),bakelite handle,1.2mm body,1.2mm lid capsule-bottom,outside mirror polished 1, high pressure cookers ... safety set, safety window, safety indicator valve,pressure control valve,open-close /locking valve2, adopt streamlined design and advanced stainless steel ... lareg area pressure-releasing safety window, releasing pressure rapidly.4, open and shut the pot free of push, easy and simple ...